65 lines
1.4 KiB
JavaScript
65 lines
1.4 KiB
JavaScript
export function linesToStruct(lines) {
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let result = {};
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lines.forEach(line => {
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let cindex = line.indexOf(":");
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if (cindex == -1) { throw new Error(`Malformed line "${line}"`); }
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let key = line.substring(0, cindex);
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let value = line.substring(cindex+2);
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if (key in result) {
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let old = result[key];
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if (old instanceof Array) {
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old.push(value);
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} else {
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result[key] = [old, value];
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}
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} else {
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result[key] = value;
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}
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});
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return result;
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}
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export function songList(lines) {
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let songs = [];
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let batch = [];
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while (lines.length) {
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let line = lines[0];
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if (line.startsWith("file:") && batch.length) {
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let song = linesToStruct(batch);
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songs.push(song);
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batch = [];
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}
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batch.push(lines.shift());
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}
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if (batch.length) {
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let song = linesToStruct(batch);
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songs.push(song);
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}
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return songs;
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}
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export function pathContents(lines) {
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const prefixes = ["file", "directory", "playlist"];
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let batch = [];
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let result = {};
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let batchPrefix = null;
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prefixes.forEach(prefix => result[prefix] = []);
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while (lines.length) {
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let line = lines[0];
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let prefix = line.split(":")[0];
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if (prefixes.includes(prefix)) { // begin of a new batch
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if (batch.length) { result[batchPrefix].push(linesToStruct(batch)); }
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batchPrefix = prefix;
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batch = [];
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}
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batch.push(lines.shift());
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}
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if (batch.length) { result[batchPrefix].push(linesToStruct(batch)); }
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return result;
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} |